V boring-machine



i- UNITED STATES PATENT OEEIOE. j

JONATHAN JOHNSON, OF MIEFLIN BURG, PENNSYLVANIA.

BORING-MACHINE.

j Specification ofl Letters Pat-,ent No. 5,011, datedMarch v13, 1.847.

To all whom t may concern Be itknown that I, JONATHAN JOHNSON, of Mifliinburg, in the county of Union and State of Pennsylvania, have invented a new and Improved Boring-Machine; and I do hereby declare the followingto be a full, clear, and exact` description ofthe construction and operation thereof, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l, is a perspective View, and Figs. 2, and 3, are parts of the same detached. e

Similar letters refer to corresponding parts in all the figures.

rI`he nature of my invention consists in the combination and arrangement of an auger with a sliding carriage by such means and manner that the power applied to the auger will propel, withdraw, and reset the same, and regulate the movement of the carriage until any desired number of holes are formed in the piece of timber placed upon the carriage. Y

The sliding carriage and auger, and the various parts connected therewith,y Y are placed upon a supporting frame constructed in any well known or usual manner. I

K, is the sliding carriage resting upon the ways N, N, on the side of the supporting frame.

O, O, are gates rising from each end of the sliding carriage, through which the post or piece of timber to be bored passes, and is permanently secured by set screws p, p,

passing through the caps of the gates.

A shaft b, is placed at right angles to the sliding carriage-near the center of the support-ing frame-having free longitudinal play in its bearings s, s.

The auger C, is confined in a socket at the end of the shaft b.

A, is a pulley on the auger shaft.

H, is a cam on the same, placed at the side of the pulley A. Y

L, is a vibrating bar, its lower end being hinged to the center post C, and its upper end embraces a journal on the outer end of the auger shaft. A cord m, is attached to near the upper end of the vibrating bar L, passing through the center post O, (and over a pulley) to the end of'which (cord) there is suspended a weight t. The weight t, drawing upon the vibrating bar L, causes it to act upon the shaft b, and thereby give a sufiicient forward pressure to the auger as it is revolved, to force it into the wood. To i the central base cross piece D, of thesupporting frame (immediately below the auger shaft 6,) there is connected by a hinge a Qvertical vibrating post E, having a lateral vconcave projection I,

secured to the top of the same. l 5F, is an arm projecting at right angles vfrom the rear side of the vibrating post E, fa short distance below the top ofthe same. E d, is a vertical pin inserted into the upper Iside of the armF. V c

I e, is an arm projecting from the rear side lof the vibrating post E, to which is susstoppedat the proper moment, and retained while a hole is bored in the post or piece of timber on the carriage, by means of the detent z', taking into notches n, n, on the side of the carriage. The detent ,.is connected to and pressed forward by the spring Gr, made fast to the front side piece of the frame. l Y

The operation of my improved boring machine is as follows. A beam or post J, is placed upon and secured to the carriage, and adjusted to the proper position with the auger O; (the carriage being retained by the detent z', as before ,described motion is then imparted to the auger by means of a band rpassing from a driving drum around the pulley A. As soon as the auger has passed through the post or beam, or penetrated to the desired distance, the pin L, projecting from the side of the pulley A, takes hold of the pin el, rising from the arm F, and carries along the arm and the vibrating post E, till the cam H, is brought in contact with the concave I, the action of which withdraws the auger to its original position. The instant the auger is withdrawn, the tooth g, projectingV from the side of the pulley A (opposite to the cam II,) acts upon the pin f, projecting from the spring G, and pushing back the same, detaches the detent z',

for a moment from the carriage the Weight lw, then moves forward the carriage until,

the detent takes into another notch and retains the same While another hole is bored. As soon as the cam H, ceases to operate on the concave I, the vibrating post E, falls back against the cross-piece R, and remains in that position until the advance of the auger brings the pin 71 projecting from the pulley A, into contact With the pin CZ, rising from the arm F as before described. In this manner the operation is continued until the required number of holes are bored. When lthe requisite number of holes have been bored in a post, or piece of timber the adjustable pinj, at the rear end of the front side of the carriage, takes hold of and vibrates the latch k, and causes it to catch hold cfa pin in the front end of the vibrating bar Z, which permanently retains the bar, causing its rear end to press against the upper end of the vertical vibrating bar L, and thereby prevents the auger from being pressed forward and continuing to operate i Vpost E and its arms F" and e, and lateral projecting concave g-the camk H, and

pulley A, upon the auger shaft C,the pin z, and tooth g,upon the pulley,-thespring G, the detent i, and pin f, connected to each With each other and with the notches '11 n,

in the side of the carriage, and the Weight- "w, for moving the 'same substantially inthe manner herein setjforth.

JONATHANv JOHNSON;

Witnesses JOHN DETWILER,

THos. Gr. LEHMAN..

i Vother,--the vibratingbar L, and Weight 25,-- the Whole arranged combinedland operating" 

